It is not improbable that Calathus will very naturally follow 
Pcecilus, and lead by means of C. piceus of Marsham to Sy- 
nuchus , with which genus it agrees in having serrated claws, a 
structure confined to the above genera, and to Dolichus and 
Lcemostlienes , as observed by Latreille. The trophi are not un- 
like those of Omaseus and Steropus , but the dilated joints in the 
tarsi of the males are of a very different form ; and the contour 
of the whole insect is so characteristic, that we can at once 
distinguish the species comprised in this natural genus. 
The following are our British species : 
1. C. latus Dej. 9 Nob. 
2. Cisteloides Ill.—Panz. 11. 12. — frigidus Fab. — Sturm , 
pi. 121. — fuscipes Gmel. — flavipes & obscurus 
Marsh . — Common everywhere. < 
3. flavipes Payh. — Duft. — Sturm 9 pi. 122. A. — fulvipes 
Dej ., not of Fab. — Taken in Devon in September. 
4. fuscus Fab. — ambiguus Oliv. 3. tab. 12 .f. 1 47. — rufan- 
gulus Marsh. — Not uncommon in the hedges in Da- 
rent Lane during the summer, and I have found it 
in September under stones in Suffolk. 
5. melanocephalus Linn.—Panz. 30. 19.— Don. 14. 480. 
— Common everywhere. 
6. littoralis Leach’s MSS. — Not uncommon in April, 
June and September on the sea-shore in Suffolk and 
* Devon. 
7. piceus Marsh. 444. 32. — This insect varies from the ty- 
pical form in having the thorax narrower behind. — 
It is occasionally taken in Norfolk and Devon. 
Four specimens of C. latus have been taken by Dr. Leach 
in Devonshire : one in a salt marsh near the river Lary, 26th 
May 1826; a 2nd in a coppice, 11th June, near Plymouth; 
and two others near Mutley and on Lipstone Hill in the same 
neighbourhood. This insect does not appear to have been 
either described or figured in any other work, and I am in- 
debted to Mr. Samouelle for the above satisfactory account of 
its habitats. 
The plant figured is Asperula odorata (Sweet Woodroof). 
